Lots of People
The group pursued the man until they reached a hallway that was very congested with people shouting in every direction. Peter was determined to figure out what was wrong because it appeared that something was amiss in this situation.
Different Outfit
Peter wants to enter the room to investigate, but he is unable to do so given his current attire. He needs to put on his regular clothes. He eventually finds a room with staff clothing hanging there after searching the area. What good fortune!